You can include OR uppercase keyword:e.g. dna OR rna looks for keywords dna or rna.

You can include - prefix or NOT uppercase keyword to define keywords that should not be included:e.g. dna OR rna NOT protein (alternatively: dna OR rna -protein) will look for links with keywords DNA or RNA, but not protein

Universal Protein Resource (UniProt) maintains a stable, comprehensive, fully classified, richly and accurately annotated protein sequence knowledgebase, with extensive cross-references and querying interfaces freely accessible to the scientific community. UniProt is comprised of four major components, each optimized for different uses: the UniProt Archive, the UniProt Knowledgebase, the UniProt Reference Clusters and the UniProt Metagenomic and Environmental Sequence Database.

The Virtual Ribosome is a DNA translation tool with a built-in ORF finder that allows the use of alternative start codons, the IUPAC degenerate DNA alphabet, and all translation tables defined by the NCBI taxonomy group. The tool can also highlight the intron/exon structure of genes using information found in the feature table of GenBank flatfiles in the final translation results.